Combined vibrator and timer.



Wjs. NEWGOMBT. COMBINED VIBRATOR AND TIMER.

APPLICATION FILED AUG. 24, l908.

Patented June 1, 1909.

wi tu una I A UN 0 'fr WILL-bild S. NEWCOMET. OF PHILADEPLHIA, PENNSX LVANIA.

no. eeasee.

Application ed .august 2, 19o-3.

To all whom 'ze may .concer-a:

Be it known lthat i, YVrLLmM S. Nnw- COMET, a citizen'orithe United States, resid i mechanically operatedfand docs noty depend upon vthe magnetism inthe core of the coil for any portion oi its operation. v

It has for ainrt'her object to provide a contact which operates entirely separate from the engine and the circuit in whichit is located is always broken when the engine is at rest .and furthermore cannot beclosed should the en ine inn-backward. v

" or the `purpose of illustrating my invention, I. have shown in the accompanying drawings one 'form thereof which is at present preferred by me, since the same has been found in practice to give satisfactory and reliable results, although it is to be understood thatV the various instrumentalties of, variously which my invention consists can be arranged andorganized and that'my invention is not limited to the precise arrangement and organization of these iiistrumentalities as herein shown and described.

Figure 1 represents a side cleft/ation oi an apparatus embodying my invention. Fig. 2 represents a section on line .rcx, Fig. 1. Fig.' 3 represents the lapparatus in contact position. Fig. 4 represents a diagrammatic view of the connections. Fig. 5 represents a section through one of the contact members.

Similar numerals oi reference indicate corres ending parts in thc figures. s

teferring to the. drawings -1 design atcs a casing loosely .mounted on a shalt adapted to rotate relatively thereto and having xedly secured thereon n hub 3 the periphery oi which is as here shown, divided into soit able sections by a ring of insulation il whereby short rirruitlng betwernn com i3 and cam is eil'cetuallj.' prevented. The houtiuns ol the com und trip memher (i will Jl'esetly be described. it will he noted l hat the ring oi insulation 4 preferably forms n part ol a member' oi'v insulating material separating the outer rim oi the hub 3 from Specification or" Letters Patent,

ing post 23 is of course surrounded a trip f Patentes i, iene.

the inner rim and to which it is attached.

suitable means.

mountedat a suitable point on the casing 1, in the present instance, being secured thereto by means oi an strip ri which is fastened by screws 9 to the casing 1 or other well known means and carrying on the extended angle portion 1G' an adjusting screw 11 on which and located beneath the flexible ,i designates a Yflexible spri-n T contact spring 7 is astrip of insulation 12'serving to Y prevent a current. becoming short circnitedv `through the casing proper. Adjusting nuts 1.3 are provided on the screw 11 which serve the purpose of .a binding screw 'for the conneet-ion oi a suitable circuit wire. lt will be noted Athat as here shown the angle strip il is mornted exterior of the casing and therefore an opening 1e is\provided to allow the fienibie contact strip 7to pass into proper position Within the casing 1 although it will be readily seen that the same 1s capable oi various arrangements.

At a suitable point on the surface of the strip 7 a contact 15, preferably of platinum, is provided and in the present instance is lccated near the extremity of the strip in order that the fullvalueof the inertia ofthe spring member may be brought into play.;v 1&3 des ignates a contact oi similar material located in direct alinement withthe contactS/the iustlng screw 17 mounted on a member .18. rilhis member 18, in the present instance, pivotally mounted on the casing by means of a stud bolt 1Q so that it may be swung away from. the normal position adjacent the 'flexible contact 7 as occasion demands. It will be noted that the Contact screw 17 is at all points well insulated irom the pivotcd member lo' but passes directly through in contact with a supplemental contact '2O which latter is provided with a dc'icnding portion 21 adapted to engage a contact 22 formed on the end of a binding post 255 passing through the casing l and to which another wire of thc circuit is connected. This bindwith inertlation 2li to prevent contact with thc casing itself and consequent short circuiting.

26 designates a trip linger )ivotidly scoured to the member le b suitnlblc moans as the screw 2S and ie provii ed with outwardly extending ends 27 and 2% to the former of which a spring 2Q, joined to 'the casing 1, is connected to maintain the en d 231m the patri same being supported preferably on an adducesa current in the secondarycoil 34iii" 'the member 18 and rojects a sulicient dis- 'tance to be engaged y the trip finger 25 and revent inoperative retraction of that mem- 31 and 32 designate Wires connecting the mechanism to the proper circuit which as here shown is a rimary one of a spark coil 33 of which 34 is t e secondary coil and 35 the batteryin' the primar "circuit, It will be clear that each time t e flexible strip 7 engages with theeontact 16 .that a current will be sent through the primary coil which iiiwhich latter current a. spark plug 35 .is located by means of which a spark is produced for the purpose of igniting a charge in a gas engine or similar structure.

In operation the shaftl 2 is rotated by the'A engine andthe cam 5 is at intervals brought into engagement with the end 28 of the trip iiger 25 which it shifts against the tension of the spring 29 and thereby maintains the 'swinging member 18 stationary and held into engagement with the contact 22 and in osition for closing the circuit by means of t e flexible strip 7. Just before the cam releases the tii linger 25 the trip cam 6 engages the leXi le member 7 and as it passes thereunder withdraws the saine some little distance from its position adjacent the contact 16 and as the movement continues the llexible member 7 snaps oil of the tri 6- and quickly returns the flexibility thereo allowing the same to react a suliicient distance beyond the normal position to contact with the end of the screw- 17 and thus momentaril close the circuit through the primary co- As soon as this circuit is closed by this contact the cani 5 passes out of engagement with the trip finger 25 and the spring 29 immediately returns the latter to vnormal position. lt will thus be clear that no matter what speedof the engine the interval of contact will always be the same since there is no opportunity for the flexible member 7 to virate suliiciently to cause a second contact and also no danger of too short a contact, since the member 18 is always held .in osition by the cam 5 until the flexible mem er 7 makes a single contact.

It Will of course be understood'thatby means ofmy novel mechanism as many contact members as desired may be located within-the casing 1 but in the present instance l have shown tWo,-the same being adapted for use in a two cylinder engine one ofcourse for each cylinder, although if an engine of three or four cylinders were used there would be a corresponding numberl of contacts.

An important feature in my novel conger out of operaeeaeefe struction resides in mounting one ot' the contacts Within theecasing so that it may he swung back out of normal position in case the engine should for any reason be started in the reverse direction so that there is no danger ofthe circuit bein closed, to produce a spark which would result in the continued rotation oi the engine in this direction. ltis well known that in certain analogous structures it frequently happens that an eX- plosion takes place in the cylinder at the wrong-.time an produces a movement of the engine in the reverse direction and in view of the arrangement oi the timer contacts, and theplike, ignition takes place in exactly the same inanneras when the engine is running in la forward direction. By means of ger 25 and carry the member 18 about the pivot 19 away from the contact making strip? thus avoiding any possibility of the circuit being closed to make a positive and continued series ci sparks resulting in a constant running of the engine in a reverse direction. The cams 5 and 6. are so located relative to eachother that on a reverse movement, th at is, to turny them in a clockwise direction, as shown in Fig. 1, the cam 5 has sufficient time in which to engage the arm 25 and shift its movable contact Just before it is possible for the flexible member to ccntact therewith. 0f course it will be clear that this lead of one cam over the other must equal or be greater than the distance from the end of the contact 16 to the extremity of the arm 25 and it will of course be noted that even should the cani 6 engage the flexible member 15 at the same 'time that the cam 5 is in enga ement' with the movable -arm 25, there wil still be a movement together before the spring` member 15 contacts with contact 16 and during this interval the pivoted member 18 has been shifted to avoid making contact at this time. A -further feature relative to this pivoted contact meinber is the certain breaking of the circuit Whenever the engine comes to rest, that is, it is impossible for the engine to stop With the contact mechanism closed so as to maintain the spark coil energized which not only vresults in a loss of current but in the premature starting oi the engine should there be a correct mixture within the cylinder.

it will now be apparent that l have devised a novell and useful construction which embodies the features of advantage enu merated as desirableain the statement of the invention and the above description and while l have in the present instance shown and n described the preferred embodiriient thereof which has been found in ractice to give satisfactory. and reliable resu ts, it is to e understood that the same is susceptible of modification in various particulars without departing from the spirit or scope of the invention or sacricing anyl of its advanta es.

aving thus described my invention, what I claim as new and desire to secure by Letters Patent, is

- 1. In a device of the lcharacter described, a casing, a rotatable member therein, a plurality of movable contacts adjacent thereto,

means moving withsaid rotatable member to maintain one cont-actV stationary and means movi with said rotatable member to shift the ot ercontact.

2. In a device of the character described, a casing, a rotatable member therein, a plurality of movablelcontacts vadjacent thereto, means moving with said rotatable member to shift one contact and maintain the other contact stationary.

3. In a device of the character described, a casing, a rotatable member therein, a eXible contact adjacent thereto, a contact ivoted to'said casing, means to shift said exible contact, and means to maintain said pivoted contact stationary.

4. In a device of the character described, a

casing, a rotatable member therein, a ilexible contact adjacent thereto, a contact pivoted to said casing, and means on said rotatable member to shift said flexible contact and maintain said pivoted contact stationa 5. Iii a device ofthe character described, a casing, a rotatable member therein, a plurality .of movable contacts adjacent thereto, a cam on said rotatable member to shift one contact and means moving with said rotatable member to maintain the other Contact stationary.

6. In a device ofthe character described, a casing, arotatable member therein, a plurality of movable contacts adjacent thereto, a cam on said rotatable member to shift onecontact, and means insulated therefrom and moving with said rotatable member to main-- tain the other contact stationary.

WILLIAM S. N EWCOMET.

Witnesses:

C. D. MoVAY, E. HAYWARD FAIRBANKS. 

